Barber s chair



(No Model.)

H. GEISE.

BARBBRS CHAIR.

Patented Aug. 4, 1885.

W/A/ESSES' UNITED STATES PATENT @rmcn,

HENRY GEISE, OF PHILADELPHIA, PENNSYLVANIA.

BARBERS CHAIR.

ST ECIE'ICATION forming part of Letters Patent No. 323,661, dated August 4, 1885.

Application filed August l4, 1894.

i" 0 ctZZ whom it may concern:

Be it known that I, HENRY GEISE, ofPhiladelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Barbers Chairs; and I do hereby declare the following to he a full, clear, and exact description of thcinvention,such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in barber's chairs, more particularly to improved mechanism for the angular adj nstment of the back, the object of the same being to provide a self-locking device which shall be capable of the finest adjustment, and which shall be convenient, durable, and neat.

\Vith these ends in view my invention consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view of the adjusting device attached to a chair, and Fig. 2 is a detached view of the devlce.

A represents the seat-frame of the chair; I3, the back frame, the arms I) of which are pivotally secured to the standards a, which latter are conveniently formed by the upward extension of the front legs of the chair.

To the back of the seat-frame A a two-armed bracket, 0, is firmly secured, the arms preferably extending downwardly and outwardly at an angle of about forty-five degrees. Between the outer ends of the arms of the bracket 0 the head of a screw, D, is pivotally secured. The screw D is of sufficient length to admit of the necessary rise and fall of the back to afford the required adjustments, and of sufficient strength to sustain the weight and strain to which it is subjected without danger of bonding or breaking.

A frame, S, preferably cast in one piece, and consisting of two parallel bars, E, terminating atthe lower end in aflat oval-shaped loop, 0, is pivotally secured at its upper end to knee-brackets F, the latter being rigidly secured to the lower portion of the chair-back B. The sides E of the frame are sufficiently far apart to allow the screw D to pass freely between them, and the upper and lower faces of the loop (2 are widened and perforated to (No model.)

admit the said screw and allow it to slide freely, but without unnecessary play therein.

tween the upper and lower faces of the loop e, and said nut is provided on its face with beveled gear g.

The sides E of the above-mentioned frame S are connected by an arch brace or bridge, H, cast integral therewith, and located about half way between the upper and lower ends of the frame. This bridge H is provided with a rearwardly-extending stud, h, securely set therein, on which is mounted the operating-wheel K. The rim of the wheel Kis provided with beveled gear 75, adapted to engage the gear 9 on the nut G. An operating-handle, L, is also secured to the rim of the wheel K, as shown.

When the wheel K is rotated, the nut G is thereby turned on the screw D, and by the contact of the latter with the faces of the loop 6 the frame S is forced upwardly or down wardly on the screw, and the back B of the chair is thereby elevated or depressed.

The pitch of the thread on the screw D is so slight that the turning of the nut thereon is easily accomplished, while the pressure of the frame S on the nut, combined with the friction between the nut and screw, forms an effective lock for holding the chair-back in any desired adjustment.

I am aware that it is old to provide a chair having a pivoted back with a metallic frame or yoke pivoted to the seatframe and carrying beveled wheels, and a screw pivoted to the chair-back and passing through one of the bevel-wheels in the metallic frame at a point to one side of a line passing through the pivotal bearing of the metallic frame. In this device referred to the weight of the chairback falls on the metallic frame or yoke to one side of the pivotal bearing of the latter, and consequently tends to force the outer end of the frame or yoke downwardly and cause it to bind against the screw. In my device the screw passes through the frame or yoke in line with the pivotal bearing of the yoke or frame, and hence this tendency of the parts to bind is overcome.

The advantages of my present improvement consist in relieving the operating-wheel of any pressure from the back of the chair, which would naturally cause it to bind on its axle in allowing the nut G a direct contact with the frame S, whereby the power is directly opposed to the resistance, and in doing away with a rearwardly extending frame work which, in many instances, projects so far as to be seriously in the way of the operator.

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a chair having a pivotal back, of a depending metallic frame pivoted to said back, abevel-wheel supported in said frame and having a screw-threaded opening, and an operating-wheel journaled in said frame, and meshing with the bevelwheel of a screw-threaded rod pivoted to the chair and engaging the bevel-Wheel, the said rod being located in a line passing through the pivotal bearing-frame and the pivotal bearing of the screw, substantially as set forth.

2. The combination, with a chair having a pivoted back, of the metallic frame pivoted to the chair-back and having the oval-shaped loop at its lower end, abevel-wheel located within said loop and provided with a screw-threaded opening, an operating-wheel journaled to said frame and meshing with the bevel-Wheel, and the screw-threaded rod pivoted to the seat and passing through the bevel wheel and walls of the loop, the said rod being located in a straight line passing through the pivotal bearing of the metallic frame and the pivotal bearing of the rod, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

HENRY GEISE.

Witnesses:

E. C. SEWARD, S. G. NOTTINGHAM. 

